Keyring overhaul - take #1

crypto/keyring/alt_signing_algorithms.go

@@ -0,0 +1,44 @@
+package keyring
+
+import "github.com/tendermint/tendermint/crypto"
+
+type AltSigningAlgo interface {
+	Name() SigningAlgo
+	DeriveKey() AltDeriveKeyFunc
+	PrivKeyGen() AltPrivKeyGenFunc
+}
+
+type AltDeriveKeyFunc func(mnemonic string, bip39Passphrase, hdPath string) ([]byte, error)
+type AltPrivKeyGenFunc func(bz []byte) crypto.PrivKey
+
+type secp256k1Algo struct {
+}
+
+func (s secp256k1Algo) Name() SigningAlgo {
+	return Secp256k1
+}
+
+func (s secp256k1Algo) DeriveKey() AltDeriveKeyFunc {
+	return SecpDeriveKey
+}
+
+func (s secp256k1Algo) PrivKeyGen() AltPrivKeyGenFunc {
+	return SecpPrivKeyGen
+}
+
+var (
+	// Secp256k1 uses the Bitcoin secp256k1 ECDSA parameters.
+	AltSecp256k1 = secp256k1Algo{}
+)
+
+type AltSigningAlgoList []AltSigningAlgo
+
+func (l AltSigningAlgoList) Contains(algo AltSigningAlgo) bool {
+	for _, cAlgo := range l {
+		if cAlgo.Name() == algo.Name() {
+			return true
+		}
+	}
+
+	return false
+}

crypto/keyring/alt_signing_algorithms_test.go

@@ -0,0 +1,31 @@
+package keyring
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestAltSigningAlgoList_Contains(t *testing.T) {
+	list := AltSigningAlgoList{
+		AltSecp256k1,
+	}
+
+	assert.True(t, list.Contains(AltSecp256k1))
+	assert.False(t, list.Contains(notSupportedAlgo{}))
+}
+
+type notSupportedAlgo struct {
+}
+
+func (n notSupportedAlgo) Name() SigningAlgo {
+	return "notSupported"
+}
+
+func (n notSupportedAlgo) DeriveKey() AltDeriveKeyFunc {
+	return SecpDeriveKey
+}
+
+func (n notSupportedAlgo) PrivKeyGen() AltPrivKeyGenFunc {
+	return SecpPrivKeyGen
+}